topic 2b- states of consciousness Flashcards
consciousness
our awareness of ourselves and our environment
biological rhythms
the natural cycle of change in our body’s chemicals or functions
circadian rhythm
the biological clock; regular bodily rhythms (for example, of temperature and wakefulness) that occur on a 24-hour cycle
REM sleep
rapid eye movement sleep; a recurring sleep stage during which vivid dreams commonly occur. also known as paradoxical sleep, because the muscles are relaxed (except for minor twitches) but other body systems are active
alpha waves
the relatively slow brain waves of a relaxed, awake state
sleep
periodic, natural loss of consciousness– as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation
hallucinations
false sensory experiences, such as seeing something in the absence of an external visual stimulus
delta waves
the large, slow brain waves associated with deep sleep
insomnia
recurring problems in falling or staying asleep
narcolepsy
a sleep disorder characterized by uncontrollable sleep attacks. the sufferer may lapse directly into REM sleep, often at inopportune times
sleep apnea
a sleep disorder characterized by temporary cessations of breathing during sleep and repeated momentary awakenings
night terrors
a sleep disorder characterized by high arousal and an appearance of being terrified; unlike nightmares, night terrors occur during stage 4 sleep, within 2-3 hours of falling asleep and are seldom remembered
dream
a sequence of images, emotions, and thoughts passing through a sleeping person’s mind. ___ are notable for their hallucinatory imagery, discontinuities, and incongruities, and for the dreamer’s delusional acceptance of the content and later difficulties remembering it
manifest content
the story line of a dream
latent content
the meaning of a dream